<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        var obj = {
            id:"lisi"
        }
        //bind改变了函数内部this指向，
        // var fn = function(){
        //     console.log(this.id);
        // }.bind(this)
        // fn()
        var go = function(a,b){
            console.log(this.id);
            console.log(a+b);
        }
        go.call(obj,1,2);
        go.apply(obj,[1,3]);
    </script>
</body>
</html>